Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd29dcdafb771584…

MALICIOUS

PDF

81.9 KB Created: 2021-04-28 18:40:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b803fe1ab5978074730178dbabde48e SHA-1: c3dfce666f0fa68e80cbe76b521ab16001770a80 SHA-256: cd29dcdafb771584c84d8a10c53f040bd43845ceb01d43f23149c4ec9e8707e8
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF that contains an embedded URL leading to a phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The presence of an external URI and the overall context suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://lozipotod.ru/strik?utm_term=common+logarithm+table+pdf+download
    • https://static.s123-cdn-static.com/uploads/4367283/normal_5ffac36f925cb.pdf
    • http://blockingscenery.com/is_gdp_a_good_measure_of_economic_growth524lx.pdf
    • http://uose.xyz/58731598077lsgwl.pdf
    • http://pay-order.info/570960506208dzh3.pdf
    • https://cdn.sqhk.co/tamurikubol/vhct8k0/foosball_3d_print.pdf
    • https://static.s123-cdn-static.com/uploads/4383567/normal_6006eb3fc2bab.pdf
    • https://static.s123-cdn-static.com/uploads/4408584/normal_5fdf37f34df6f.pdf
    • https://cdn.sqhk.co/mifigatira/7thagfa/qr_code_scanner_iphone_free_download.pdf
    • https://cdn.sqhk.co/konajera/hibhaif/cession_form_old_mutual.pdf
    • https://cdn.sqhk.co/wosepimi/duigigf/magic_snake_puzzle_anleitung_ball.pdf
    • https://cdn-cms.f-static.net/uploads/4450878/normal_6049d8bdc2bed.pdf
    • https://cdn.sqhk.co/dolafita/igdajbZ/bubojapefetagatobogakeju.pdf
    • https://cdn.sqhk.co/fujonexa/gjLIEwQ/ben_10_omnitrix_hero_hack_mod_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4375206/normal_5fee2019582fc.pdf
    • https://cdn-cms.f-static.net/uploads/4378171/normal_604bcad32d119.pdf
    • http://testertumentum.space/55065968685yu7ua.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://rudurugineme.epizy.com/clear_acrylic_sheet_menards.pdf
    • http://dofadedivuxira.rf.gd/74036406177.pdf
    • http://gimanumaju.epizy.com/python_examples.pdf
    • http://lenirugelalef.rf.gd/attributes_of_god_arthur_pink.pdf
    • http://votodofo.epizy.com/66713012895.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd3d.bin
d07537ec0a4bdda3a0148635e234337ec42c64b55aea5a0bc7ed9738fc16f607		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3D 5320 bytes
font_01_sfnt_off0000ef35.bin
c3fa928c0f900cc093e796dd660b2dcc624f621ea927b25a47e715a0df41ac05		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF35 11440 bytes
font_02_sfnt_off00011641.bin
22d9acba1a3f287346c19b676725a6b0ae05ee116b40b4b9c65b52e9b5ae871b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11641 16240 bytes
font_03_sfnt_off00012bb7.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BB7 4324 bytes

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